Checkering tool



I Deg 3949 DE w. c. WINFIELD 2,490,497

CHECKERING TOOL Filed Jan 14, 1946 f. 4. WW A? a .5 Mai ifh EzfzaidPatented Dec. 6, 1949 UNITED STATES PATENT OFFICE 2,490,497'onEoKERINdTboL De Witt o. Winfield, Newark, N. J. Application January14, 1946,'sr'ia'1'N6. siijlii's 3 Claims.

This invention relates to new and useful improvements and structuralrefinements in tools such as may be used for checkering or hand knurlingthe surfaces of wooden articles such as gun stocks and other objects ofa like nature.

The principal object of the invention is to provide a device of thecharacter herein described which is particularly designed for hand use,rather than being associated with a machine.

Another object of the invention is to provide a checkering tool, which,when used, will produce parallel lines, accurately spaced at equalintervals with respect to one another.

A further object of the invention is to provide a checkering tool whichis easily and conveniently operable.

An additional object of the invention is to provide a checkering toolwhich is of simple construction and which cannot easily become damaged.

With the above more important objects in view, and such other objects asmay become apparent as this specification proceeds, the inventionconsists essentially of the arrangement and construction of parts asillustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the invention, showing the same in use.

Figure 2 is a plan view of the invention, per se.

Figure 3 is a side elevation showing the reverse side of the invention,with respect to that illustrated in Figure 1.

Figure 4 is an end View taken in the direction of the arrow 4 in Figure3.

Like characters of reference are used to designate like parts in thespecification and throughout the several views.

Referring now to the accompanying drawings in detail, the inventionconsists of a blade i, provided with an elongated recess 2 in the loweredge thereof. One end of the blade is receivable into a suitable handle3, to which it is secured by means of the rivets 4.

Provided on the lower edge of the blade l, between the remaining endthereof and the recess 2, is a plurality of longitudinally alignedcutting teeth 5, the same being of triangular cross-sectionalconfiguration as is best illustrated in the accompanying Figure 4.

A U-shaped bracket 6, positioned in the recess 2, extends upwardly tostraddle the sides of the blade I, and is pivotally connected to thelatter by means of a pivot bolt l. One of the sides of the bracket 6 isformed integrally with an extension arm 8 which, in turn, is providedwith a sharp guiding edge 9. The latter is also of a triangularcross-sectional configuration, and the apex thereof is parallel with andspaced from the apioes of the aforementioned cuttin teeth 5.

The edge 9 is urged downwardly to below the level of the teeth 5 bymeans of a spring in positioned inside the bracket 6. This spring is ofa configuration best illustrated in the accompanying Figure l, and isretained in position by one of its ends ll engaging a suitable notch l2formed in the edge of the blade I.

Rotation of the bracket 6 about the pivot l is restricted by a suitablebolt l3 engaging an arcuate slot i l formed in the end of the arm 8.

When the invention is placed in operation, the tool is held in the hand,as illustrated by the reference numeral l5, and by drawing the sameacross the surface to be checkered, the cutting teeth 5 will penetratethe surface and form a line of the desired length. This operation isrepeated to form all successive lines, but each time a new line is beingformed, the guiding edge 9 is kept in contact with the immediatelyadjacent line already formed and in this manner,

- the parallel relationship and equal spacing of the several lines isassured.

It is thought that persons skilled in the art to which the inventionrelates will be able to obtain a clear understanding of the inventionafter considering the description in connection with the drawings.Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in the shape, size and arrangement of details comingwithin the field of invention claimed may be resorted to in actualpractice,

if desired.

What I claim as my invention is:

1. A checkering tool comprising, a blade having an elongated recessformed in one longitudinal edge thereof, a plurality of cutting teeth onsaid edge between said recess and the end of said blade, a handlesecured to said blade, a U-shaped bracket in said recess and straddlingthe sides of said blade, an extension arm fixed to one side of saidbracket, a guiding edge on said arm disposed in side-by-siderelationship with said teeth, a pivot pin connecting said bracket tosaid blade, said guiding edge being parallel with and adjacent to saidcutting teeth, a spring in said bracket bearing against the edge of saidblade, said spring urging said guiding edge below the level of saidteeth, and means for limiting the movement of said bracket with respectto said teeth.

2. A checkering tool comprising a blade havmeans including a slot and apin extending i in said slot.

3. The combination of claim 1 and said bracket travel limiting meanscomprising an elongated member secured to said blade, a slot in saidblade, and a part of said elongated member being passed through saidslot.

DE WITT C. WINFIELD.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date D. 99,855 Coughlan June 2, 1936692,028 Page Jan. 28, 1902 695,738 Krauss Mar. 18, 1902 1,379,973Gillespie May 31, 1921 1,574,641 Christopherson Feb. 23, 1926 1,809,228Ballou June 9, 1931 2,187,590 Lurie Jan. 16, 1940

